Shaving implement



Jan. 7, 1941. N. TES-rl SHAVING IMPLEMENT Filed Oct. 26, 1937 2sh'ets-sneet 2 INVENTOR ATTORNEY UNITED STATES PATENT OFFICE assenza I fsmivmo menons rau, ma, ms, aunar to Ginette.

Safety Bagel' poration of Delaware Company,

Bostommacor.-

Application october ze, im, sonal No. rimas 1 claims. y (ci. .zo-4s)construction so that correct dimensions, clearance and adjustment ofparts are all of extreme importance. The two co-operating shearingmembers must bemaintained reliably without variation in intimateshearing'contact. Anyobstruc' tion tending; tol separate-the; shearingmembers,

isv

ev'to an infinitesimal amomt, greatly impairs the shearing emciency ofthe whole implement.v It is, therefore, ofthe greatest importance tokeep.

the interior o! the shaving head clear and free from shavingdebris whichotherwise is likely to pack and force the shearing members apart or toimposean excessive load. on the motor.

y The object of the present invention is` to improve dry shavingimplements in the respects above discussed by providing more spacewithin the shaving head, by making it more accessible for cleaning.purposes and by increasing the effec-l tive area; of the implement andat the same time rendering its face-engaging surface smoother and morecomfortable for the user.

' y To these ends an important feature of the in- Vvention consists .inaspacer element which is arranged as a comb plate or guard `between twoopposed seriesof shearing teeth, that is to say, theV implement of myinvention presents two spaced series of shearing teeth separated fromeach other topa greater extent than heretofore andv presenting in thatIspace a smooth or serrated 'guard member to prevent the skin of 4the'user from bulging substantially below the plane of the face-engagingsurface of the implement. The exposed edge of the guard may serve as acomb to straighten and direct hairs to the shearing teeth or it may bemerely a smooth spacer or filler arranged for smooth engagement with theface of the user.

The guard member interposed between the two series otshearing teeth maybe permanently' se cured in place or it may be removablev to' permitaccess to the interior. of the shaving headfor the purpose of cleaning.AIt may have furtheruseful functions when employed-in a shaving implementin which 4the shaving head is retained yieiaingiy in position.` Insuchcombination it may be shaped as `a cam or lever operative to'displacetemporarily the cutter head and interrupt the driving connection tothereciprccatory cutter. The cutter may thus bestopped and held at rest tofacilitate cleaning or it maybe freed from its connections Figs. 6-8;and

so that it can be temporarily removed .from the shaving head forinspection, 'replacement or Another important feature of the invention 6consists in a cutter member which is expansible reliable Vin operationand better adapted to be maintained in a clean condition with properadjustment of shearing parts than in implements 16 heretoforeavailable.`

Fig. 1 is a view of the implement in side elevation and on an enlargedscale, a portion of the casing being shown as broken away;

Fig. 2 is an end view of the implement on a still 20 larger scale and.with portions brokenaway;

Fig. 3 is a view in longitudinal vcross-section corresponding to Fig. l:l

Fig. 4 is a view in cross-sectionon the linen-Iv of Fig.- 2: c l

Fig. 5 is a similar view illustrating an alternative construction;

Fig. 6 is a view in longitudinal cross-section of the upper lportions.of an implement of still another construction;

Fig. 'l is a view in side elevation, partly in section, corresponding toFig. 6;

Fig. 8 isa view in front elevation corresponding to Fig. 6;

Fig. 9 is a view in perspective and on a greatly enlarged scale of thecutter employed in the implement of Figs. 6-8; j I

Fig. 10 is a plan view,v with parts broken away. of the shearing headofthe implement shown in Figs. 11'and12, are sectional views of thecutter on the lines Il and l2- respectively of Fis'. 6, and onanlenlarged scale. l

, 'l'he implement includes in its structure a casing lll oi? "Bakelite"lor other plastic material: shaped to serve as a hollow handle for theimplement and also as a housing for its operating.- motor' -The' casingl'. is provided at its upperend with a socketor channel for the metallichead of the`implement and is arranged to hold the 50, `head iirmlyl inplace although permittingtemporary detachmentthereof as willbenpresently explained. The head comprises a pair-of oppcsltely disposed-side portions Il connected ateach end by relatively wide guard bridgesi2. Spacer blocks. l

I3 are interposed between the side portions and all are held inassembled relation by transverse bolts I4.

The face-engaging surface of the implement comprises two series oftransverse obliquely disposed teeth l5 which are located between theguard bridges l2 and are formed by obliquely slotting the parallelflanges into which merge the upper edges of the side portions Il. Eachseries of shearing teeth extends-inwardly from the body of itsrespective Vside portion II and terminates in a downturned ange I6, andthese ilanges, as shown in Figs. v1 and 2. are spaced from each other bya substantial distance. Midway between the down-turned ilanges I6 isrigidly secured an elongated comb plate or spacer bar I1. This bar isset edgewise and held in place by spacing collars I8 and rivets or boltsI3 which pass through the flanges I6 near the ends of the head andbeyond the range of the shearing teeth. Its upper edge is. serrated withsubstantially the same spacing as thestationary shearing teeth I5.Preferably the serratlons are at right angles to the longitudinal axisof the bar I1 instead of being obliquely disposed as are the shearingteeth I5.

It will be noted that the bar I1 divides `the space between the opposedends of the stationary shearing teeth into approximately equal parts andthat it is located substantially flush with the face-engaging surface ofthe shearing teeth I5 thus preventing the skin of the userfrom bulginginto the opening between the two series of shearing teeth sufficientlyto become scratched by the ends of the teeth. The serrations of the barI1 act also as the teeth of a comb to straighten out and direct theindividual hairs to the shaving zone of the teeth.

A spring retaining strip 2l is secured to the bottom of the head of theimplement by screws 22 and is provided with two outwardly and downwardlyextending hooked ends which may be snapped into openings 4provided forthat purpose in the sides of the casing III and, when so 1ocated; willhold the head of the implement firmly upon its seat, at the same timepermitting movement for a convenient release when the hooked ends aresprung outwardly.

The cutter 25 comprises an elongated opensided cylindrical member havingspaced upstanding side walls with straight parallel outer faces arrangedto slide upon the inner faces of the side members I I. The side walls ofthe cutter are slotted to form teeth 26 with upper horizontal ortransverse shearing edges arranged to cooperate with the stationaryshearing teeth I5 of the implement. The teeth 26 are shorter than thestationary teeth I5 andare, therefore, overhung at their inner nendsby'stationary teeth.'

The cutter 25 is located above the Spacer blocks I3 and is providedwith-an aperture to lreceive an eccentric pin which projects upwardlyfrom the upper end of the motor shaft 23 .as shown in Fig. 3, togetherwith a portion of its operating motor. Each of the spacer blocks has areceptacle for a spring-pressed ball 21 which nor--v mally urges thecutter 25 upwardly maintaining .its movable shearing teeth 26 inyielding engagement with the stationary shearing teeth' I5.

The bar I1 shown in Fig. 4 converges toward its upper edge to a smoothserrated surface and has a combing` action when moved across the face.-The implement shown in Fig. 5 is similar to that already discussedexcept that it is provided wth a bar 29 whlch`is T-shaped incrosssection and which substantially lls the space between thedown-turned anges I6 of the implement head.

The alternative form of implement shown in Figs. 6 to 12 is equippedwitha spacer bar 50 and possesses the advantages hereinabove discussed andcertain additional advantages which will be now pointed out. vThe casing40 of the implement shown in Figs. 6 to 12 has a removable cover plate4I and a recess for the metallic head of the implement. As herein shown,the head comprises similar side members 42 and 43 provided with opposedseries of stationary shearing teeth 41. The side portions are held inassembled relation by spacer blocks 44 and transverse screws 45. Theleft hand screw 45 as shown in Figs. 7 and 8 is provided with a slottedeccentric collar 46 which is received in a slot provided for it in thecasing 40 beneath the cover plate 4I. By loosening the clamping screw 45and turning the eccentric collar 46 in one direction or the other thehead may be adjusted longitudinally in its position in the casing 40 andconsequently the relative position of the movable shearing teeth in thecutter andthe stationary shearing teeth in the members 42 and 43 may beadjusted to give the implement the proper open time in its cycle. Thespacer blocks 44 are each provided with a downwardly extending pin towhich is secured a tension spring 43 extending `Qbliquely to an earprovided for that purpose upooppositesides.oLthepasing. These springstend to hold the head rmbut yield- A ingly in place within the recessprovided for it in the casing 40 but permit it to be temporarilydisplaced as will presently appear.

As shown in Figs. 6 to 10 the spacer bar 50 is pivotally mounted uponatransverse pin 5I vwhich extends through the right-hand end of thehead. As shown in Fig. 6 the bar 50 is provided at its left-hand endwith downwardly extending abutment portions 52 which rest upon thebottom of the socket when the bar is in its shaving position. In theimplement of these ilgures, however, thevbar 50 has another functionbesides aiording access to Athe interior of the head, viz., the functionof temporarily lifting one end cf the head of the implement andinterrupting the operating train to the cutter 53, causing this toremain at rest and permitting it to be removed from the head, ifdesired.

The cutter as herein shown comprises two elongated sections 53presenting together a hemispherlcal channel in their upper face andbeing yieldlngly connected to permit a transverse expanding movement. Tothis end a headed' stud 55 extends loosely through the two sections 53limiting the amount of possible separation. A pair of compressionsprings 54 is mounted in the cutter one at each end thereof as shown inFig. 6 and these springs tend to normally urge the cutter sections apartso as to maintain yielding transverse engagement between the verticalportions of the stationary and movable shearing teeth. The cutter isprovided with a transverse groove 56 in its bottom face and in itsdriving or operating train is included the lever 51 which is operated bythe motor, not shown. A leaf spring 58`interposed between 4the spacerblocks 44 and the cutter 53 tends always to hold the cutter upwardly inengagement with the overhanging teeth of the head.

Normally the guard bar 50 occupies the position shown in Fig. 6, thetension oi the springs 4I,

transmitted to the head tending to hold it in position. u

If now it is desired to get access to the interior of the head forpurposes 'of cleaning, the bar 50 may be swung in a clockwise directionagainst the tension of the spring 48, whereupon not only is the desiredspace opened but one end of the head is tilted outwardly as shown inFig. 8,

. carrying the'cutter out of its engagement with vits operatingconnection and bringing'it to a standstill in convenient position forcleaning or for temporary removal.

Having thus disclosed my invention and described several preferredembodiments for purposes of illustration but not in a limiting sense,what I claim as new and desire to secure by Letters Patent is: A

1. A shaving implement having a casing containing driving mechanism, ahead containing a reciprocatory cutter operated by said mechanism, meansfor yieldingly holding the head ,in position on the casing, and meansfor temporarily moving the head away from the casing to interrupt thedriving connection to the cutter.

2. A shaving implement having a casing, a head yieldingly held in placeupon the casing and containing a reciprocatory cutter, and lever meansmounted in the head and effective temporarily to displace thehead withthe cutter therein.

3. A shaving implement having a handle with a socket, a head containinga reciprocatory cutter, a spring normally holding the head in itssocket,'\

vand a cam movable to displace the head againstI the action of saidspring.

4. A shaving implement having a head with two series o! shearing teethspaced apart from each other, a handle having a socket for the head, a

`spring normally holding the head inl its socket,

and a spacer bar located between thel series of teeth and havingconnections movable to displace the head against the action of saidspring.

5.y A shaving implement having a hollow handle provided with an internalmotor and an external socket, a head having parallel series of shearingteeth spaced from each other, a movable guard occupying the spacebetween said series of teeth and having a cam shaped portion arranged todisplace the head when the guard is moved.

6. A-shaving implement comprising a hollow handle having a socket in oneend, a head located in said socket and having a series of shearing teeththerein, springs connected to said head and extending within the handlefor holding the head in its position within said socket, and a pivotallymounted device under the I.control of the operator for displacing thehead against the action of said springs l, l

7. A shaving implement including in its structure a handle provided witha seat, an oscillatory driving member projecting a limited distanceabove the seat, a head normally positioned on the seat and having twospaced parallel series of shearing teeth, a cutter engaged by saiddriving member and having teeth co-operating with those of the head,andl an elongated guard occupying the space between said series ofteeth, pivotally mounted in the head and having a cam reacting with aportion of the handle to displace the head temporarily from its seat anddisengage the cutter from its driving member when the guard is rocked.

NICHOLAS TESTI.

